Glass-beveling machine.



W. J. POBOWSKI.

GLASS BEVELING MACHINE.

APPLICATION FILED FEB. 8. 1916.

1,205,260. Patented Nov. 21, 1916.

H 3 sums-sum 1.

mmw

WI TIVESSES //v VE/V 70/? A TTORNEYS W. J. POROWSKL GLASS BEVELING MACHINE.

APPLICATION FILED FEB. 8. 1916.

1,205,260. Patented Nov. 21, 1916.

3 SHEETS-SHEET 3.

IN VE/V TOR WITNESSES JfiQWM/m' Wdpamzz/aki a .1 a l 'WLADYSLAW JOSEPH POROWSKI, OF NEW YORK, N. Y., ASSIGNOR-TO ABRAHAM SOLOMON, OF NEW YORK, N. Y.

GLASS-BEVELING MACHINE.

Specmcation of Letters Patent.

Application filed Febrnary 8, 1916. Serial No. 76,908.

To all whom it may concern:

Be it known that I, WLADYSLAW JosEPH POROWSKI, a subject of the Czar of Russia, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Glass-Beveling Machine, of which the following is a full, clear, and exact description.

My invention relates to a glass-beveling machine, particularly adapted for the bevel-' ing of disks.

An object of the invention is to provide a simple, strong and inexpensive beveling machine which is automatic in its action and in which the disks to be beveled are maintained in position while beveled by pneu- -matic means. I

A further object of the inventlon is to provide a glass-bevelin-g machine in which the disk when beveled is automatically dis engaged from the grindstone in such a} way that the same can be easily removed with& outarresting the machine, and a disk to be beveled placed into position to be engaged by the grindstone.

With the above and other objects in view,

' the nature of which will more fully appear as the description proceeds, the invention consists in the novel construction, combination and arrangement of parts as herein fully described, illustrated and claimed.

"In the accompanyingdrawings, forming part of the application, similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a plan view of my machine;

Fig. 2 is an axial section on line 2-2, Fig.

1; Fig. 3 is a rear endelevation; Fig. 4 is a front elevation of a circular, beveled mirror the bevel of which was formed on my machine; and Fig. 5 is a cross section therethrough.

Referring to the drawings? is the bed, preferably of rectangular contour and provided at the front with spaced lugs 8. The bed is mounted on a center pivot 7 secured into the bed support, which has also arouated slots 8' engaged by screws 9 by which the bed maybe locked to the support after it has been adjusted on the .pivot 7'. A

frame 9 is mounted to rock on, adjustable center bolts 10 carried by the lugs. The frame-9 has an arm 11 extending rearwardly from the bed and fronrwhici'p-a-bearing por- ".front end of the spindle.

tion 12 risesto cooperate with the bearing portion 13 of the frame. A hollow spindle If}: is revolubly mounted in the bearing p01- t1on s 12 and 13. The end of the spindle pro ecting in front of the bed 7 is threaded to receive an interchangeable, apertured, flanged head 15 which has at the margin a ring 16 of yielding material, the purpose of which will appear hereinafter.

The rear end ofthe spindle is provided with a collar 17 which forms the abutment for the packing material 18 located in a stufiing box 1.9 forming paiit of a socket 20. The socket 20 has a valve-controlled extension 21 to which a flexible conduit 22 in the shape of a hose is connected. Through this conduit air may be exhausted from the hollow spindle.

sion 24 adapted to engage the arm 11 of the frame, whereby the socket isprevented from portions 12 and 13 resisted by a split washer 25 which is located between a stop collar 26' and the bearing portion 13. The stop collar is preferably in the shape of a pulley- It will be noted that gravity will move the frame 9 .on its pivot, tending to raise the This tendency is resisted by a cam 27 which has a spiral periphery 28;. The arm 11 carries a roller 29 mounted to ride on the periphery of the cam. The cam isv free to turn on a shaft30. A clutch portion" 31 is constrained to rotate with the shaft. A cooperating clutch p6rtion 32 forms part of the cam, and it is normally maintained in engagement with the cam portion 31 by a coil spring 33 mounted on the shaft 30. The shaft 30 is supported in suitable bearings 34 on the bed 7 A worm wheel 35 is constrained to rotate The cam27 is provided with a cut-out Patented Nov. 21, 1916. I

Cooperating with the stuffing box is a packing gland 23 having an extenpoint a and the lowest point I) of the spiral..28.

' When the roller 29 is dropped into the cut-out 40 of the cam, the front end of the spindle 14 will be raised from the grindstone 42, If a glass disk 43 (as shown in f Figs. 4 and5) is brought against the ring I 16 the suction created in the spindle through 20 the hose 22-will retain the disk 43 against.

the head 15.v By bringing the roller 29 into engagement with the point b of the cam the clutch portions are permitted to" engage,

, thus setting the cam 27 into rotation. The spiral periphery gradually feeds the margin of: the disk 43 against the grindstone 42, thus the bevel of the disk 44 is gradually formed; When the cam reaches the highest point a, the margin of the disk is perfectly beveled (as shown in Figs; 4' and 5), and j as the roller comes over thecut-out it drops thereinto, automatically forcing the clutch out, thus stopping the spindles feed and simultaneously clearing the disk from the 85 grindstone. The so-beveled disk can then Q be removed from the'spindle and a new unbeveled disk substituted therefor, and the operation repeated. i

. To relieve the ,shaft 30 and the connections therefor from shocks when the frame drops into the cut-out, a buffer 45 is provided for the bed 9. The buffer is in the shape of a dash-pot. It consists, preferably, of ahousing 46 having a piston 47 therein, the piston rod 48 of which is provided with a head which is cushioned to be engaged by a toe 49 extending from the frame 9. A vent 50 is provided in the housing so that the falling of the frame 9 is gradual, the buffer 45 forming a' yielding or cushioning means for the frame for eliminating shocks in the machine. It is self-evident that with a change of the disk size the head 15 must be changed.

56 While I have described the principle of operation, together with the apparatus which I now consider to be the best embodiment thereof, I desire to have it understood that the apparatus shown is merely illus .60 trative and that such changes may be made as are within the scope of the appended claims. I claim: 1. In a machine'ofthe class described, a 45 revoluble disk carrier,-means for pneumatistone after a a hollow'spindle carried in said frame, pneucally retaining a disk on the carrier, means for revolving the carrler, a revolving grindstone, and means for feeding the carrier to disk.

2. In a machine of the class described, a

revoluble disk carrier, a rocking frame sup.-

porting the disk carrier, means for pneu maticall'y retaining a disk on the carrier, means for revolving the carrier, a rev'oluble grindstone, and means for rocking the frame to feed the carrier toward the stone, said means for rocking theframe including 7 means for clearing the carrier from the' predetermined feed of the carrier. I 3. In. a machine of the class described, a hollow spindle mounted to rock longitudi nally, pneumatic means for creating a suc. tion in the spindle whereby a disk is retained by the spindle, a revolving grindstone, and a spiral cam for rocking the spindle' to bring the margin of thedisk into engagement with the stone, said cam having means for rocking saidspindle so as to move the disk on the spindle away from the '95 stone after the disk has been fed through a predetermined distance toward the stone.

4. In a machine of the class described, a bed, a frame pivotally mounted on the bed,

10B matic means associated with one end of the spindle for creating a vacuum therein, a

disk-receiving head associated with the other end of the spindle, means for revolving the spindle, a revoluble grindstone adjacent the head, the action of gravity on the frame tending to move the head of the spindle away frpm the stone, a cam having a peripheral, spiral surface, a roller carried by the frame engaging the peripheral surface of the cam, means for revolving the cam whereby the frame is moved on its pivot and whereby the margin of the disk is feet against the grindstone, said cam having a cut-out into which said roller is adapted to drop whereby the head is clearedfrom the grindstone, substantially as and for .the purpose set forth.

' 5. In a machine of the class described, a (base, a frame pivotally supported thereupon, hollow spindle rotatably mounted in said frame, pneumatic means associated with one end of said spindle for exhausting the air from the hollow of the spindle, a disk carrier associated with the other end of the spindle, a revoluble grindstone adjacent the carrier, the force of gravity upon the frame tending to move the head away from the grindstone, aroller carriedby said-frame, a cam engaging the roller, means for revolving the cam, a clutch the revolving of said cam causing the frame to move on lts pivot so as to bring the margin of the disk into engagement with the grindstone; said cam having a cut-out for receiving the roller whereby the disk is cleared from the stone and the engagement of the roller with the cut-out, causing the uncoupling of the cam from the revolving means.

6. In a machine of the class described,'a

1 gravitationally-operable frame, a disk havmg a spiral periphery, a roller carried by the frame resting on the periphery of the disk, means for revolving the disk whereby the frame is gradually raised, said disk having a cut-out into which the roller is adapted to drop, and a'revoluble disk carrier on the frame.

7. In a machine of the class described, a gravitationally-operable frame,'a disk having a spiral periphery mounted to rotate, means for revolving the disk, yielding means for coupling the disk to the revolving means, a roller carried by the frame engaging the spiral periphery of the disk, said disk having a cut-out into which the roller is adapted to drop, said cut-out being so shaped that the drop of the roller thereinto uncouples the disk from the revolving means, and a revoluble disk carrier on the frame.

8. In a machine of the class described, a gravitationally-operable frame, a revoluble shaft, a train of gear for driving said shaft, a'disk free to revolve on said shaft, means for coupling the disk to the shaft, a resilient member tending to maintain the disk coupled to the shaft, said disk having a spiral periphery and a cut-out, a roller carried on said frame engaging the periphery and adapted to drop into the cut-out of the disk when the same comes under the roller, said cut-out having a beveled portion adapted to'be engaged by the roller, whereby the disk is moved on the shaft to counteract the resilient member, thereby uncoupling the disk from the shaft, a revoluble disk carried on the frame, and pneumatic means associated with the disk carrier for retaining the diskon the carrier.

9. In-a machine of the class described, arevoluble disk carrier, a rocking frame supporting the disk carrier, means for pneumatically retaining the disk on the carrier, means for revolving the carrier, a revoluble grindstone, resilient means normally tending to move the disk carrier toward thegrindstone, and means for. rocking the frame wherebythe disk carrier is moved to and from the grindstone.

10. In a machine of the class described, a gravitationally operable frame, a cam for operating the frame, means for. actuating the cam, means normally coupling the actuating means to the cam, and means for uncoupling the cam from the actuating means operable when said frame is moved under the action of gravity.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

WLADYSLAW JOSEPH POROWSKL- Witnesses:

FRANCES FRIEDWALD, BERNARD LEVY. 

